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Predictably Irrational

The Hidden Forces that Shape Our Decisions

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Predictably Irrational

Written by: Dan Ariely

Narrated by: Simon Jones

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₹199 per month after 3 months. Renews automatically. Cancel anytime. Offer ends 15 July, 2026 at 11:59 PM IST.

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Why do smart people make irrational decisions every day? The answers will surprise you. Predictably Irrational is an intriguing, witty and utterly original look at why we all make illogical decisions.

Why can a 50p aspirin do what a 5p aspirin can't? If an item is "free" it must be a bargain, right? Why is everything relative, even when it shouldn't be? How do our expectations influence our actual opinions and decisions?

In this astounding book, behavioural economist Dan Ariely cuts to the heart of our strange behaviour, demonstrating how irrationality often supplants rational thought and that the reason for this is embedded in the very structure of our minds.

Predictably Irrational brilliantly blends everyday experiences with a series of illuminating and often surprising experiments, which will change your understanding of human behaviour. And, by recognizing these patterns, Ariely shows that we can make better decisions in business, in matters of collective welfare, and in our everyday lives, from drinking coffee to losing weight, from buying a car to choosing a romantic partner.

Dan ArielySimon JonesHarperCollins

Consciousness & Thought

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Consciousness & Thought Creativity Philosophy Psychology Psychology & Mental Health Self-Help Social Psychology & Interactions Success

Critic Reviews

'For anyone interested in marketing – either as a practioner or victim – this is unmissable reading. If only more researchers could write like this, the world would be a better place.' Financial Times

‘A marvelous book that is both thought-provoking and highly entertaining, ranging from the power of placebos to the pleasures of Pepsi. Ariely unmasks the subtle but powerful tricks that our minds play on us, and shows us how we can prevent being fooled.’ Jerome Groopman, New York Times bestselling author of How Doctors Think

‘PREDICTABLY IRRATIONAL is wildly original. It shows why—much more often than we usually care to admit—humans make foolish, and sometimes disastrous, mistakes. Ariely not only gives us a great read; he also makes us much wiser.’ George Akerlof, Nobel Laureate in Economics, 2001 Koshland Professor of Economics, University of California at Berkeley

Most relevant

You will learn so much about yourself and the basic human nature after reading this.

I was a firm believer that most Humans are rational. That view of mine changed over the last couple of years. This book just further accelerated that process. We are not really rational. We are mostly governed by emotions. Like Jefferson said,"Reason is the servant of passions."

It is surprising how often we deceive ourselves without even realising it. We think we are acting rationally, but when as a matter of fact we aren't. Dan will change your views about how humans make their decisions based on a number of wonderful experiments. Give it a read.